[Bug]: Files shortcut to select range doesn't select last item

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

When I use the shortcut to select a range on the file application (ctrl+shift+space), the file in-between the first selection and the current hovered file are selected but the last item isn't selected

Steps to reproduce

1. Go to a folder with at least 3 items
2. Click down arrow
3. Ctrl + space (the first item is selected)
4. Down, Down
5. Ctrl + shift + space (select range)

Expected behavior

The 3 first items should be selected, but only the 2 first items are

Nextcloud Server version

31

Operating system

None

PHP engine version

None

Web server

None

Database engine version

None

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

List of activated Apps

Nextcloud Signing status

Nextcloud Logs

Additional info

Using Firefox 141 on Linux

Start in the file application’s keyboard-selection handling and reproduce the listed sequence with at least three items in Firefox on Linux. The work is done when Ctrl+Shift+Space selects the first item, the hovered item, and every item between them, including the last item.